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SECTION 7

HEATING, VENTILATION, AND AIR CONDITIONING (HVAC)
HEATING & VENTILATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7A ­ 1 HVAC CONTROL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7B ­ 1

HEATING, VENTILATION & AIR CONDITIONING

DEFECT CODE
NATURE CODE
N02 N03 N06 N07 N08 N09 N12 N13 N15 N16 N20 N21 N22 N23 N24 N27 N28 N29 N30 N31 N32 N33 N34 N35 N36 N37 N38 Poor idle Surge, hesitate, stumble Engine stalled (general) Excessive fuel consumption Excessive oil consumption Overheated Flooded, overflowing Poor acceleration, uneven acceleration Lack of engine power Percolation Blocked Shuddering, pulsation, vibration, chattering Slippage ( = slipping) Difficult engagement Difficult disengagement Squeaking, squealing, abnormal(wind) noise Dragging Pulls Stalled while driving Stalled while idling Stalled between shifts Stalling during sudden braking Fails to reach normal operating temperature RPM too low RPM too high Jumping­out Improper synchronizing N42 N43 N44 N46 N47 N51 N52 N55 N56 N57 N58 N62 N65 N66 N68 N71 N72 N73 N82 N85 N86 N91 N92 N93 N94 N99 Unstable steering Excessive shock Poor release Misaligned or mismatched Weak Deteriorated Distortion, rainbow, waving Rust, corrosion, perforation. Glazed Loose, poor fit Bubbles Inaccurate (meter, gauge, etc.) Electrical failures Blown fuse Intermittent operation Oil leak, oil entering Water leak, water entering Leaks­other (air, fuel, refrigerant, vacuum) Loosening, falling­off, sagged Grabbed Poor maneuverability Interference or hitting Inoperative High/low operating effort Special policy Undefined

CAUSE CODE
R01 R02 R03 R04 R05 R06 R07 R08 R09 R10 R11 R12 R13 R14 R15 R16 R17 Scored, scratched or chipped Frozen Peeling, come­off Rusty, corroded Split, cut or torn Broken or cracked Porous, pin holes, cavity Bent, kinky, twisted, distorted, warped or wrinkled Stripped ­ bolts, holes, nuts Soiled Weakened, loss of tension or resilience (spring, cushion, etc.) Abnormal wear Out of balance Out of round Loose or improper connection Open circuit or short circuit Burnt or burned­out R18 R20 R21 R22 R23 R24 R25 R26 R27 R28 R31 R32 R33 R34 R35 R36 R99 Grounded or shorted Faulty casting Improper clearance, back lash, free play Lack of lubricants Improper welding or soldering, welding or soldering omitted Improper tightening, fit or assembly Sticks, binds, seized Foreign material, clogged Improper sealing, sealer omitted or skipped Improper adjustment Incorrect part Improperly installed Improperly routed Missing part Flaw in material Contaminants Undefined